replace screenshot pipeline and update admin

routes/admin_api/core.py

@@ -350,7 +350,7 @@ def get_system_stats():
 @admin_api_bp.route("/browser_pool/stats", methods=["GET"])
 @admin_required
 def get_browser_pool_stats():
-    """获取浏览器池状态"""
+    """获取截图线程池状态"""
     try:
         from browser_pool_worker import get_browser_worker_pool
 
@@ -408,8 +408,8 @@ def get_browser_pool_stats():
             }
         )
     except Exception as e:
-        logger.exception(f"[AdminAPI] 获取浏览器池状态失败: {e}")
-        return jsonify({"error": "获取浏览器池状态失败"}), 500
+        logger.exception(f"[AdminAPI] 获取截图线程池状态失败: {e}")
+        return jsonify({"error": "获取截图线程池状态失败"}), 500
 
 
 @admin_api_bp.route("/docker_stats", methods=["GET"])
@@ -619,7 +619,7 @@ def update_system_config_api():
 
     if new_max_screenshot_concurrent is not None:
         if not isinstance(new_max_screenshot_concurrent, int) or new_max_screenshot_concurrent < 1:
-            return jsonify({"error": "截图并发数必须大于0（建议根据服务器配置设置，每个浏览器约占用200MB内存）"}), 400
+            return jsonify({"error": "截图并发数必须大于0（建议根据服务器配置设置，wkhtmltoimage 资源占用较低）"}), 400
 
     if schedule_time is not None:
         import re
@@ -672,6 +672,14 @@ def update_system_config_api():
             max_global=int(new_config.get("max_concurrent_global", old_config.get("max_concurrent_global", 2))),
             max_per_user=int(new_config.get("max_concurrent_per_account", old_config.get("max_concurrent_per_account", 1))),
         )
+        if new_max_screenshot_concurrent is not None:
+            try:
+                from browser_pool_worker import resize_browser_worker_pool
+
+                if resize_browser_worker_pool(int(new_config.get("max_screenshot_concurrent", new_max_screenshot_concurrent))):
+                    logger.info(f"截图线程池并发已更新为: {new_config.get('max_screenshot_concurrent')}")
+            except Exception as pool_error:
+                logger.warning(f"截图线程池并发更新失败: {pool_error}")
     except Exception:
         pass